<template>
	<div class="top-right-btn" :style="style">
		<el-row>
			<el-tooltip class="item" effect="dark" :content="showSearch ? '隐藏搜索' : '显示搜索'" placement="top" v-if="search">
				<el-button circle icon="Search" @click="toggleSearch()" />
			</el-tooltip>
			<el-tooltip class="item" effect="dark" content="刷新" placement="top">
				<el-button circle icon="Refresh" @click="refresh()" />
			</el-tooltip>
			<el-tooltip class="item" effect="dark" content="显隐列" placement="top" v-if="columns">
				<el-button circle icon="Menu" @click="showColumn()" />
			</el-tooltip>
		</el-row>
		<el-dialog :title="title" v-model="open" align-center :close-on-click-modal="false" draggable>
			<el-transfer :titles="['显示', '隐藏']" v-model="value" :data="columns" @change="dataChange"></el-transfer>
		</el-dialog>
	</div>
</template>

<script setup>
const props = defineProps({
	showSearch: {
		type: Boolean,
		default: true
	},
	columns: {
		type: Array
	},
	search: {
		type: Boolean,
		default: true
	},
	gutter: {
		type: Number,
		default: 10
	}
});

const emits = defineEmits(["update:showSearch", "queryTable"]);

// 显隐数据
const value = ref([]);
// 弹出层标题
const title = ref("显示/隐藏");
// 是否显示弹出层
const open = ref(false);

const style = computed(() => {
	const ret = {};
	if (props.gutter) {
		ret.marginRight = `${props.gutter / 2}px`;
	}
	return ret;
});

// 搜索
function toggleSearch() {
	emits("update:showSearch", !props.showSearch);
}

// 刷新
function refresh() {
	emits("queryTable");
}

// 右侧列表元素变化
function dataChange(data) {
	for (let item in props.columns) {
		const key = props.columns[item].key;
		props.columns[item].visible = !data.includes(key);
	}
}

// 打开显隐列dialog
function showColumn() {
	open.value = true;
}

// 显隐列初始默认隐藏列
for (let item in props.columns) {
	if (props.columns[item].visible === false) {
		value.value.push(parseInt(item));
	}
}
</script>

<style lang="scss" scoped>
:deep(.el-dialog) {
	width: 550px;
}
:deep(.el-transfer__button) {
	border-radius: 50%;
	padding: 0 12px;
	display: block;
	margin-left: 0;
}
:deep(.el-transfer__button:first-child) {
	margin-bottom: 10px;
}
:deep(.el-dialog__body) {
	padding: 20px 20px !important;
}
.my-el-transfer {
	text-align: center;
}
</style>
